This is the only place found in the Word of God where is says: "I and my Father are one." ... John 10:30
Jesus assures us we are eternally secure. What a Saviour!
"My sheep hear my voice, and I know them, and they follow me: And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand. My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand. I and my Father are one." ... John 10:27-30